# Approximately 10% of people are left-handed. If two people are selected at random, what is the… 1 answer below »

Approximately 10% of people are left-handed. If

two people are selected at random, what is the probability

of the following events?

a. Both are right-handed.

b. Both are left-handed.

c. One is right-handed and the other is left-handed.

d. At least one is right-handed.

6.53 Refer to Exercise 6.52. Suppose that three people

are selected at random.

a. Draw a probability tree to depict the experiment.

b. If we use the notation RRR to describe the

selection of three right-handed people, what

are the descriptions of the remaining seven

events? (Use L for left-hander.)

c. How many of the events yield no right-handers,

one right-hander, two right-handers, and three

right-handers?